/*
 * Copyright (C) 2011 JiangHongTiao
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package sk.lieskove.jianghongtiao.multithreaddownloader.request.converter;

import sk.lieskove.jianghongtiao.common.enums.EnumInterface;

/**
 * Converter for Enumeration type. Converter is created for Enum type specified 
 * in constructor. Enum type have to implement  EnumInterface
 * Date of create: May 20, 2011
 *
 * @author JiangHongTiao <jjurco.sk_gmail.com>
 * @version 2011.0520
 */
public class EnumConverter implements Converter{
    
    private EnumInterface e;

    public EnumConverter(EnumInterface e) {
        if(e==null){
            throw new NullPointerException("Enum cannot be null!");
        }
        this.e = e;
    }

    @Override
    public String convert(String value) throws Exception {
        if(e.containsValue(value)){
            return value;
        }
        throw new IllegalArgumentException("Given value is not correct!");
    }
    
}
